Added configuration to enable absolute paths

[fragsalat]

I recognized that all imports of this plugin are relative to the current document. Because I don't like this for several reasons I added a backward compatible configuration to make the paths absolute. As well I added a sourceRoot configuration which allows the users to specify from where to import since many projects are not relative to the workspace root.

Examples:
src/app/main.js requires src/app/view.js with {absolute: true, sourceRoot: 'src'}
= app/view.js
src/app/main.js requires src/app/view.js with {absolute: true}
= src/app/view.js
src/app/main.js requires src/app/view.js with {}
= ./view.js

[fragsalat]

@NuclleaR Can you please review this and release a new version if it's ok for you?

Would be cool if not everyone publishes a new version of the same plugin. Right now there are 3 out there on vs code market^^

[fragsalat]

Thx for merging so quick :)

When do you plan to release a new version?

[NuclleaR]

@fragsalat maybe today